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Finding the Fourth Proportional to 615.60, 848.88 and 567

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Solution

The fourth proportional to 615.60, 848.88 and 567 is: 781.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.60 : 848.88 = 567 : x
  2. Step 2: Convert to fraction form
    615.60/848.88 = 567/x
  3. Step 3: Cross multiply
    615.60x = 848.88 × 567
  4. Step 4: Simplify right side
    615.60x = 481,314.96
  5. Step 5: Solve for x
    x = 481,314.96/615.60
  6. Step 6: Final answer
    x = 781.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.